In a scientific publication not long since, a letter was published describing what the writer supposed was indeed something extraordinary. He had seen a fragment of rainbow--a square piece, as it were--by itself in the sky, some distance to one side of the sun. In provincial papers such letters may often be found, and even, until lately, in papers issued in London; now with accurate accounts of an ordinary halo about the sun, now with a description of a prismatic cloud round the moon, and one day some one discovered that there were two currents of air, as the clouds went in two directions. Now, it is clear enough that none of these writers had ever been out with a gun or a rod; I mean out all day, and out in the full sense of the phrase. They had read books of science; from their language they were thoroughly educated, and felt a deep interest in natural phenomena. Yet what a marvel was here made out of the commonest incidents of the sky! Halos about the sun happen continually; the prismatic band or cloud about the moon is common; so is the detached rainbow; as for the two currents of air, the clouds often travel in three directions, occasionally in four. These incidents are no more surprising to a sportsman than the sunset. I saw them, as a boy, almost day by day, and recorded the meteors in the evening. It seems to me that I used to see scores of meteors of various degrees of brightness. Once the path, the woods, the fields, and the distant hills were lit as if with a gigantic electric light; I was so interested in tracing the well-known scene so suddenly made apparent in the darkness that it was not for some seconds I thought of looking for the bolide, but even then I was in time to see it declining just before extinction. Others who have been out with their guns have, of course, seen exactly the same things; I do not mention them to claim for myself any special powers of observation, but as instances of the way in which sport brings one in contact with nature. Other sportsmen, too, must have smiled at the marvel made of such appearances by clever and well-educated, but indoor, people.